The Sharks won't see the Ducks until Nov. 30, when Ahaheim visits SAP Center to finish off a five-game Sharks homestand.(USATSI)

ANAHEIM, Calif. -- Ducks center Saku Koivu has returned to Anaheim for tests after taking a hard hit during Sunday's game at Columbus.

The Ducks recalled center Richard Rakell from the AHL on Monday.

Koivu was knocked unconscious on a hit by Columbus'Brandon Dubinsky, who was ejected from Anaheim's 4-3 victory over the Blue Jackets. Koivu must be tested and evaluated before he is allowed to return to the Ducks, per NHL protocol.

Goalie Viktor Fasth also returned to Anaheim for treatment on his lower-body injury.